﻿using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;

namespace WebTest
{
    public partial class MyControl : System.Web.UI.UserControl
    {
        protected void Page_Load(object sender, EventArgs e)
        {

        }

        protected void btnSummit_Click(object sender, EventArgs e)
        {
            if(string.IsNullOrEmpty(txtUserName.Text.Trim())||string.IsNullOrEmpty(txtPassword.Text.Trim()))
            {
                ScriptManager.RegisterStartupScript(this,GetType(),"err","alert('dfdf')",true);
            }
        }
    }
}